<template>
    <div class="app-container">
        <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch"
            label-width="68px">
            <el-form-item label="标题" prop="title">
                <el-input v-model="queryParams.title" placeholder="请输入标题" clearable @keyup.enter.native="handleQuery" />
            </el-form-item>
            <el-form-item>
                <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
                <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
            </el-form-item>
        </el-form>

        <el-row :gutter="10" class="mb8">
            <el-col :span="1.5">
                <el-button type="primary" plain icon="el-icon-plus" size="mini" @click="handleAdd"
                    v-hasPermi="['cms:news:add']">新增</el-button>
            </el-col>
            <el-col :span="1.5">
                <el-button type="success" plain icon="el-icon-edit" size="mini" :disabled="single" @click="handleUpdate"
                    v-hasPermi="['cms:news:edit']">修改</el-button>
            </el-col>
            <el-col :span="1.5">
                <el-button type="danger" plain icon="el-icon-delete" size="mini" :disabled="multiple"
                    @click="handleDelete" v-hasPermi="['cms:news:remove']">删除</el-button>
            </el-col>
            <el-col :span="1.5">
                <el-button type="warning" plain icon="el-icon-download" size="mini" @click="handleExport"
                    v-hasPermi="['cms:news:export']">导出</el-button>
            </el-col>
            <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
        </el-row>

        <el-table v-loading="loading" :data="newsList" @selection-change="handleSelectionChange">
            <el-table-column type="selection" width="55" align="center" />
            <el-table-column label="编号" align="center" prop="id" />
            <el-table-column label="栏目" align="center" prop="categoryId">
                <template slot-scope="scope">
                    <span>{{ formatCategoryName(scope.row.categoryId) }}</span>
                </template>
            </el-table-column>
            <el-table-column label="标题" align="center" prop="title" width="200" />
            <el-table-column label="简介" align="center" prop="introduce" width="200">
            </el-table-column>
            <el-table-column label="预览图" align="center" prop="thumb" width="100">
                <template slot-scope="scope">
                    <image-preview :src="scope.row.thumb" :width="50" :height="50" />
                </template>
            </el-table-column>
            <!-- <el-table-column label="内容" align="center" prop="content" /> -->
            <el-table-column label="作者" align="center" prop="author" />
            <el-table-column label="浏览次数" align="center" prop="click" />
            <el-table-column label="标签" align="center" prop="flag" />
            <el-table-column label="状态" align="center" prop="status">
                <template slot-scope="scope">
                    <dict-tag :options="dict.type.sys_used_status" :value="scope.row.status" />
                </template>
            </el-table-column>
            <el-table-column label="显示顺序" align="center" prop="orderNum" />
            <el-table-column label="备注" align="center" prop="remark" width="200" />
            <el-table-column label="操作" align="center" class-name="small-padding fixed-width" fixed="right" width="150">
                <template slot-scope="scope">
                    <el-button size="mini" type="text" icon="el-icon-edit" @click="handleUpdate(scope.row)"
                        v-hasPermi="['cms:news:edit']">修改</el-button>
                    <el-button size="mini" type="text" icon="el-icon-delete" @click="handleDelete(scope.row)"
                        v-hasPermi="['cms:news:remove']">删除</el-button>
                </template>
            </el-table-column>
        </el-table>

        <pagination v-show="total > 0" :total="total" :page.sync="queryParams.pageNum"
            :limit.sync="queryParams.pageSize" @pagination="getList" />

        <!-- 添加或修改新闻对话框 -->
        <el-dialog :title="title" :visible.sync="open" width="1000px" append-to-body>
            <el-form ref="form" :model="form" :rules="rules" label-width="80px">
                <el-form-item label="栏目" prop="categoryId">
                    <el-select v-model="form.categoryId" placeholder="请选择类别">
                        <el-option v-for="item in categoryList" :key="item.id" :label="item.name"
                            :value="item.id"></el-option>
                    </el-select>
                </el-form-item>
                <el-form-item label="标题" prop="title">
                    <el-input v-model="form.title" placeholder="请输入标题" />
                </el-form-item>
                <el-form-item label="简介" prop="introduce">
                    <el-input v-model="form.introduce" type="textarea" placeholder="请输入内容" />
                </el-form-item>
                <el-form-item label="预览图" prop="thumb">
                    <image-upload v-model="form.thumb" :limit="1" :fileSize="2" />
                </el-form-item>
                <el-form-item label="内容">
                    <editor v-model="form.content" :min-height="192" />
                </el-form-item>
                <el-form-item label="作者" prop="author">
                    <el-input v-model="form.author" placeholder="请输入作者" />
                </el-form-item>
                <el-form-item label="浏览次数" prop="click">
                    <el-input v-model="form.click" placeholder="请输入浏览次数" />
                </el-form-item>
                <el-form-item label="标签" prop="flag">
                    <el-input v-model="form.flag" placeholder="请输入标签" />
                </el-form-item>
                <el-form-item label="状态" prop="status">
                    <el-radio-group v-model="form.status">
                        <el-radio v-for="dict in dict.type.sys_used_status" :key="dict.value"
                            :label="parseInt(dict.value)">{{
                                dict.label }}</el-radio>
                    </el-radio-group>
                </el-form-item>
                <el-form-item label="显示顺序" prop="orderNum">
                    <el-input v-model="form.orderNum" placeholder="请输入显示顺序" />
                </el-form-item>
                <el-form-item label="备注" prop="remark">
                    <el-input v-model="form.remark" type="textarea" placeholder="请输入内容" />
                </el-form-item>
            </el-form>
            <div slot="footer" class="dialog-footer">
                <el-button type="primary" @click="submitForm">确 定</el-button>
                <el-button @click="cancel">取 消</el-button>
            </div>
        </el-dialog>
    </div>
</template>

<script>
import { listNews, getNews, delNews, addNews, updateNews } from "@/api/cms/news";
import { listCategory } from "@/api/cms/category"

export default {
    name: "News",
    dicts: ['sys_used_status'],
    data () {
        return {
            // 遮罩层
            loading: true,
            // 选中数组
            ids: [],
            // 非单个禁用
            single: true,
            // 非多个禁用
            multiple: true,
            // 显示搜索条件
            showSearch: true,
            // 总条数
            total: 0,
            // 新闻表格数据
            newsList: [],
            // 弹出层标题
            title: "",
            // 是否显示弹出层
            open: false,
            // 查询参数
            queryParams: {
                pageNum: 1,
                pageSize: 10,
                categoryId: null,
                title: null,
            },
            // 表单参数
            form: {},
            // 表单校验
            rules: {
                categoryId: [
                    { required: true, message: "栏目不能为空", trigger: "change" }
                ],
                title: [
                    { required: true, message: "标题不能为空", trigger: "blur" }
                ],
                introduce: [
                    { required: true, message: "简介不能为空", trigger: "blur" }
                ],
                // thumb: [
                //   { required: true, message: "预览图不能为空", trigger: "blur" }
                // ],
                content: [
                    { required: true, message: "内容不能为空", trigger: "blur" }
                ],
            },
            categoryList: []
        };
    },
    created () {
        this.getCategoryList();
        this.getList();
    },
    methods: {
        getCategoryList () {
            listCategory({ type: 1, status: 1 }).then(res => {
                if (res.data) {
                    this.categoryList = res.data;
                }
            })
        },
        formatCategoryName (catId) {
            if (this.categoryList && this.categoryList.length > 0) {
                const item = this.categoryList.find(it => it.id = catId);
                return item ? item.name : '';
            }
            return '';
        },
        /** 查询新闻列表 */
        getList () {
            this.loading = true;
            listNews(this.queryParams).then(response => {
                this.newsList = response.rows;
                this.total = response.total;
                this.loading = false;
            });
        },
        // 取消按钮
        cancel () {
            this.open = false;
            this.reset();
        },
        // 表单重置
        reset () {
            this.form = {
                id: null,
                categoryId: null,
                title: null,
                introduce: null,
                thumb: null,
                content: null,
                author: null,
                click: null,
                flag: null,
                status: null,
                orderNum: null,
                createBy: null,
                createTime: null,
                updateBy: null,
                updateTime: null,
                remark: null
            };
            this.resetForm("form");
        },
        /** 搜索按钮操作 */
        handleQuery () {
            this.queryParams.pageNum = 1;
            this.getList();
        },
        /** 重置按钮操作 */
        resetQuery () {
            this.resetForm("queryForm");
            this.handleQuery();
        },
        // 多选框选中数据
        handleSelectionChange (selection) {
            this.ids = selection.map(item => item.id)
            this.single = selection.length !== 1
            this.multiple = !selection.length
        },
        /** 新增按钮操作 */
        handleAdd () {
            this.reset();
            this.open = true;
            this.title = "添加新闻";
        },
        /** 修改按钮操作 */
        handleUpdate (row) {
            this.reset();
            const id = row.id || this.ids
            getNews(id).then(response => {
                this.form = response.data;
                this.open = true;
                this.title = "修改新闻";
            });
        },
        /** 提交按钮 */
        submitForm () {
            this.$refs["form"].validate(valid => {
                if (valid) {
                    if (this.form.id != null) {
                        updateNews(this.form).then(response => {
                            this.$modal.msgSuccess("修改成功");
                            this.open = false;
                            this.getList();
                        });
                    } else {
                        addNews(this.form).then(response => {
                            this.$modal.msgSuccess("新增成功");
                            this.open = false;
                            this.getList();
                        });
                    }
                }
            });
        },
        /** 删除按钮操作 */
        handleDelete (row) {
            const ids = row.id || this.ids;
            this.$modal.confirm('是否确认删除新闻编号为"' + ids + '"的数据项？').then(function () {
                return delNews(ids);
            }).then(() => {
                this.getList();
                this.$modal.msgSuccess("删除成功");
            }).catch(() => { });
        },
        /** 导出按钮操作 */
        handleExport () {
            this.download('cms/news/export', {
                ...this.queryParams
            }, `news_${new Date().getTime()}.xlsx`)
        }
    }
};
</script>
